Riyadh時間からHillside時間への変換
08:47:50
+8
16:47:50
+6
+6
+6
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+5
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+1.5
+1
+0.5
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-1
-1
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-1
-2
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-2
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-2
-2
-2
-3
-3
-6
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-8
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-8
-9
-11